diff --git a/CHANGES.rst b/CHANGES.rst
index 10a5776c..9dc49af0 100644
--- a/CHANGES.rst
+++ b/CHANGES.rst
@@ -1,7 +1,7 @@
 Changelog
 =========
 
-4.0.4 (unreleased)
+4.0.4 (2019-11-25)
 ------------------
 
 Bug fixes:
diff --git a/src/icalendar/__init__.py b/src/icalendar/__init__.py
index 0f1e9456..4cfa257f 100644
--- a/src/icalendar/__init__.py
+++ b/src/icalendar/__init__.py
@@ -1,5 +1,5 @@
 # -*- coding: utf-8 -*-
-__version__ = '4.0.4.dev0'
+__version__ = '4.0.4'
 
 from icalendar.cal import (
     Calendar,